3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function f(&$x) {echo $x;} function g() {return 2;} $x = 1; f(g()); echo $x;
Output for 7.0.0 - 7.1.0
Notice: Only variables should be passed by reference in /in/Jetaq on line 5 21
Output for 5.1.0 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/Jetaq on line 5 21
Output for 5.0.5
Fatal error: Only variables can be passed by reference in /in/Jetaq on line 5
Process exited with code 255.
Output for 4.3.0 - 5.0.4
21